GENOME

GENE EXPRESSION

The virion RNA is infectious and serves as both the genome and viral messenger RNA. The genomic RNA (or genome segments) is translated into polyprotein(s) which is subsequently processed by virus-encoded proteases into functional products. P3N-PIPO is expressed by polymerase slippage mechanism from the P3 ORF and probably acts as a movement protein. Cleavage sites in the family Potyviridae

REPLICATION

CYTOPLASMIC

Virus penetrates into the host cell.

Uncoating, and release of the viral genomic RNA into the cytoplasm.

The viral RNA is translated to produce a polyprotein which is processed by viral proteases into the RdRp protein and structural proteins.